Brrrrrrr Blower Fun (If you can call it fun!)

Alrighty Guys hope all is well  

Another day another problem with my 91 MK1 Clipper Karmann Cabriolet!  I am having problems with my blowers and lets just say at this time of year its not what your after!  :cry:

They don't work unless of course I am driving and then the air flow powers them - the faster I go the better they go - sadly the police don't think thats a justifiable reason for speeding  :dontknow:

I took it to my mate mechanic and he was nice enough to direct tap the blower motor to the battery which gave me lovely warm gale force wind.  Therefore it must be down to the wiring or as he suggested the relay…. 8O

I am quite good with electronics so I understand the basics, but I don't have the best documentation and so I don't know what relay to troubleshoot!  :roll:

Anyway time to open it up to you guys, any ideas or theorys are more than welcome…

Cheers,

Davey (currently very cold when stationary in the Dubya  ops: )

Davey,

Fuse
Fan switch
Ceramic resistor
Wiring

One of the above in order of ease of replacement.

Cheers

Rich

I had a problem like this on my mk1, it worked with direct curent, but not when fitted properly, i cleaned up the connections and it worked ok for a bit.......i never did fix it properly, sorry dude, al i can sugest is clean every thing up and see how it goes.

Superb guys cheers for the help….time for some tinkering tonight
 
having a job seriously interferes with getting the golf minted - but then it does fund it…awkward tiperope!  8O

My '88 cabrio was like that too.  In the end I changed the fan itself.  I found that if the fan was switched on, it would run if I poked at its faston connectors.  Then it would stay running for a while, but would usually not start the next day.  It looked as if the motor's brushes had worn out.  It was a swine to change, had to take the wipers out and remove it towards the drivers' side.  The switch is also likely to overheat and melt its plastic body, so check that before messing with the motor!  Big

With work commitments I've still not really had a chance to investigate further. :?

I got my mechanic friend to change the blower motor over for me (as I had heard how irritating the job was) but at first that did not work either.   It was only until he hard wired it to the battery it started working.  When hardwired to the battery it worked as normal and so I'm guessing that its a connection/relay issue.  :dontknow:

My flat mate is an electrical whizz kid so I'm thinking I'll enlist his expertise to test the lines etc…

Really need to get it sorted soon, getting to work in the snow with steamy windows aint much fun! 8O

Cheers for the tip tho!

i had the same problem it was my relay that was knackerd

nice one andup, do you know which one it was….

Showing my serious lack of knowledge  ops: but my car is completely in german, I don't have very good manuals so can't really find much documentation on the relays of the cabrio's

Cheers mate :wink:

Don't think there is a relay for blower?

If a direct wire from battery powers motor OK, then the fault is elsewhere and there is nothing wrong with the blower motor itself. :dontknow:

change the switch, i had this on mine not long ago, and the switch that controls the speed that ytou turn was at fault

cost me about a fiver i think,unless u want to back hander one at a scrap yard  :wink:

cheers for the tip,   8)

strangely enough tho I'm pretty sure the switch was working without an issue when it was hardwired to the battery, thats what was making me think it was the relay/wiring…

it would be great if you could just click the fingers and these things got fixed eh!  

AAAAARRRRRGGGGGHHHHHH!!!!!!      

No longer is this any fun, at all, not even slightly!!!  

I have now replayed the relay andunp suggested, but sadly that hasn't sorted it.

So I took to taking the switch apart, and tested the three settings with a multimeter, but they all appear to be coming back with an 3.8 ohms.  I have schematics for an 83 golf and my understanding is that they switch doesn't make the difference in the blower, it instead chooses the route through resistors which affect the blow strength accordingly   :dontknow:

So now I plan to take the multi reader thing a little further testing the resistor on the blower itself and then start on the wiring

Any ideas from anyone on anything else it could well be before I get royally stuck in?  

I had the same problem last year and after a lot of messing about I found what the problem was. It was the part the heated switch plugged into, the wires had worked loose. Might be worth checking the wires at the back of the plug.